JPH0319602Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a method for attaching one panel to the other panel, for example, when attaching a trim board for the interior of an automobile to the body. The present invention relates to a fastener consisting of two plastic members, a female and a male, which is effectively used when fastening the object to the body.

[Prior art] As a fastener for fastening two panels together
-A fastener described in Publication No. 31444 has been proposed,
It is currently in practical use.

The fastener of the present invention is an improvement on the previously proposed fastener, and its purpose is to improve the operability when connecting the male member to the female member so that the connection can be performed smoothly; Also, the workability and reliability of attaching the female member have been improved.

As stated in the publication, in the proposed fastener, the head consisting of two main and subordinate flanges of the male member is inserted into the rear part of one panel, and the body of the female member is attached to the mounting hole of the other panel. Push the flange in until it reaches the end, and attach it to each panel. Place one panel so that it is in contact with the other panel, and push the shaft protruding from the male member into the body of the female member to join. The panels are then fastened together. Of course, in addition to the above-mentioned method, this fastener can be used by inserting the shaft of the male member into the body of the female member in advance and connecting them, and then attaching the head of the male member to the hole in one panel. Panels may be joined by pushing a female member protruding from one side into a mounting hole made in the other panel, but in either case, both male and female members must be joined for use. There is.

[Problems to be solved by the invention] In the conventionally provided fasteners, the shaft portion of the male member is simply rod-shaped, or a spherical engaging body with an enlarged diameter is provided at the tip to form an engaging portion. In reality, this hinders the coupling of the male and female members, resulting in poor workability.

In particular, when fastening a trim board by fastening the female and male members to individual panels and then joining them together, the positions of both members may be difficult to connect, as many fasteners may be connected at the same time. Even if there was some misalignment, the shaft parts could not be connected quickly because they did not fit together quickly.

The present invention was devised in view of the above-mentioned defects in the conventional fasteners, and allows the shaft portion of the male member to be easily and smoothly guided and inserted into the body portion of the female member during coupling, and The object of the present invention is to provide a panel fastener in which the shaft portion of the male member is particularly improved so that the two can be reliably connected.

At the same time, the present invention improves the locking means provided on the outer peripheral surface of the female member to ensure smooth and reliable attachment to the panel.

[Means for Solving the Problems] In order to improve the above-mentioned conventional defects, the present invention first provides a substantially conical engagement bulge at the tip of the shaft of the male member and inserts it into the body of the female member. The purpose of the present invention is to improve workability by making it easier to enter the body using the engagement bulge as a guide, and to facilitate engagement with the engagement receiving part formed on the inner wall of the body. The object of the present invention is that door-shaped engagement wings are provided on the outer peripheral surface of the body of the female member to improve workability and reliability during installation.

To further clarify the features of the present invention, it has a male member that attaches to one panel and a female member that attaches to the other panel. The female member has an engagement shaft that hangs down from the lower surface of the head, and a mounting flange that regulates the amount of insertion into the mounting hole of the panel, and a hollow connection that extends below the mounting flange. In a fastener comprising a body and a locking means for the mounting hole, the male member is connected to the engagement shaft portion, and the fastener is configured to fasten the panels in contact with each other by fitting and connecting both members. an engagement bulge having a substantially conical shape at the distal end of the female member, and an engagement receiving portion that engages the engagement bulge in the middle of the depth on the inner wall surface of the coupling body of the female member; The locking means provided on the outer peripheral surface of the joint body of the female member is a door-shaped lock whose free end protrudes in the circumferential direction from a thin hinge portion provided along the length direction on the outer peripheral surface of the joint body. It is characterized in that the upper edge of the joining wing is used as an engaging portion facing the mounting flange, and a part of the outer circumferential surface of the joining body is cut to provide a retraction space for the engaging wing. The purpose of the present invention is to provide a fastener for fastening two panels in contact with each other.

[Function] Due to the above-described structure, the fastener of the present invention has a sharp tip when inserting the engaging shaft of the male member into the body of the female member when connecting the female and male members. Because of this, it is easy to insert into the opening of the body, and it is also easy to push open the engagement receiving part formed on the inner wall of the body to improve passage and achieve quick and reliable engagement. becomes. On the other hand, since the engaging wings that serve as the locking means are door-shaped, they can be easily bent inward to pass through the mounting hole when installed, and when the installation is complete, the upper edge that becomes the engaging part in contact with the panel,
Moreover, since it is clamped jointly with the mounting flange 5 facing the mounting flange 5, it is reliably prevented from coming off.

Next, an illustrative embodiment of the present invention will be explained, and its features will be explained in detail.

[Example] Fig. 1 is a central vertical sectional front view showing a state of use in which two panels A and B are fixed in contact with each other, and Fig. 2 is a front view before they are joined.

Two members 1, male and female, constituting the fastener of the present invention;
As shown in the figure, the male member 1 is made of a plastic material, in this case polypropylene, and is individually formed, and the male member 1 has a head 3 and an engaging shaft 4, and the female member 2 has a mounting flange 5 and an engaging body. 6 and elastic engagement wing pieces 7, respectively.

The head 3 of the male member 1 is formed in a shape in which a large flange 3a and a small flange 3b are connected by a head 3c, and an engagement bulge 8 having a substantially conical shape extends from the center of the lower surface of the head to the tip. An engaging shaft portion 4 having a vertically extending position is provided vertically.

This male member is attached to one panel A of the trim board etc.
It is mounted by inserting the head into a keyhole-shaped mounting hole a formed by connecting two large and small holes that are pre-drilled in the machine.The shape of the mounting hole is not shown here. However, as explained and known in the previously proposed fasteners, when installing, first insert the small diameter flange 3b of the head 3 into the large diameter hole of the mounting hole a, and attach the large flange 3a to one side of the panel A. Next, in this state, the entire head is moved to the small diameter hole, and the small flange 3b passed through the large hole is hooked to the edge of this small diameter hole. It is installed by sandwiching both sides of the panel.

On the other hand, the engagement body 6 of the female member 2 is formed in the shape of a bag with one end open and the circumferential surface circular. and,
This opening is formed into a tapered surface so as to expand outward, and an umbrella-shaped mounting flange 5 continues to protrude from the outer peripheral surface.

This engagement body 6 has a hollow portion large enough to enclose the engagement shaft portion 4 of the male member, and engages the engagement enlarged portion 8 at the tip of the engagement shaft portion 4 with the inner wall surface near the bottom of the hollow portion. It is provided with an annular engagement receiving portion 9, and two engagement wings 7, 7 are provided on the outer circumferential surface of the body in a back-to-back manner.

In this embodiment, the engagement wing piece 7 is always made of material in the form of a door whose free end protrudes in the circumferential direction from a thin hinge portion 10 provided along the length direction on the outer circumferential surface of the engagement body. The free end part is elastically raised from the outer circumferential surface of the engagement body so as to protrude outward, and this engagement wing piece 7 horizontally aligns the engagement part 11 on the upper edge facing the mounting flange. The lower edge 12 is cut obliquely to form an arcuate curve from the free end to the lower end of the hinge so as to match the tapered shape of the engagement body. Here, a part of the outer circumferential surface of the fuselage that the engaging wing pieces 7 face is cut to create a retraction space 1 for the wing pieces.
There are 3.

The female member 2 having the above structure is constructed by inserting the engagement body 6 into a circular mounting hole b previously made in a panel B, for example, the body of an automobile, so that the mounting flange 5 comes into contact with the surface of the panel B. It is attached by pressing it until it is pushed open, but when it is pushed into the mounting hole b, the engagement wing piece 7 provided on the outer peripheral surface of the body first bends inward at the edge of the hole and retreats. It retreats to the space 13 and passes through the hole. After passing through the hole, it expands outward again, so that the engaging portion 11 on the upper edge engages with the back surface of the panel, and together with the mounting flange 5, the panel is clamped and mounted. In addition, the engagement wing piece 7
When inserting the lower edge 12, the edge of the mounting hole b is first abutted near the hinge part of the tip, and then this abutment point is gradually moved to the free end along the arcuate oblique side. This guides the tube to bend inward, making insertion easier.

In this way, after attaching the male and female members to panels A and B, respectively, when the panels are brought into contact with each other and the engagement shaft portion 4 of the male member is inserted into the engagement body portion 6 of the female member through the opening. , first enters using the tapered surface as a guide, and the engagement enlarged portion 8 at the tip of the shaft pushes open the annular engagement receiving portion 9 and fits in. Both members are joined together and the panels are stopped in contact with each other. I will wear it.

[Effects of the invention] The invention is constructed as described above, and includes male,
The panels can be fastened together by attaching both female members to their respective panels and then pushing the engaging shaft portion 4 of the male member 1 into the female member 2. At this time, according to the present invention, the panels can be fastened together. Since the engagement bulge 8, which has a substantially conical shape with a sharp tip, is provided at the tip of the engagement shaft, it becomes easy to explore the opening of the engagement body, and at the same time, allows for quick penetration. The engagement bulge that has entered also effectively acts to expand the engagement receiving portion within the body, allowing smooth engagement with this engagement receiving portion.

In addition, from the improvement of the guiding ability of the engagement bulge 8 to enter the engagement body, the positioning of the male and female members in conventional fasteners of this type, that is, the engagement shaft portion of the male member when connecting the female member, is improved. Since it has become easier to explore the opening of the body, it has become possible to shorten the length of the engagement shaft and downsize compared to conventional ones.

In other words, when conventional fasteners are connected at multiple points at the same time, such as when fastening a trim board, the openings of the mating parts are connected by utilizing the flexure of the long engagement shafts that are slightly misaligned between the fasteners. The female member had to be deep to match the length of the engagement shaft, and depending on the location where it is used, this depth, or size However, the adoption of the substantially conical engagement bulge at the tip of the engagement shaft in the present invention replaces the flexibility of the engagement shaft, and reduces the overall length of the shaft. The length of the female member of the fastener can be reduced accordingly.

Furthermore, when the above-mentioned two members are connected, if the opening of the engagement body is made into a tapered surface that expands outward as shown in the above embodiment, it will be easier to receive the engagement bulge, and a large number of engagement tubes will be received. When fastening using a fastener, the connection can be achieved even if there is some misalignment, and work efficiency is further improved.

The locking means provided on the outer circumferential surface of the body of the female member in the present invention is a door-shaped engagement wing that is bent about a hinge portion provided along the longitudinal direction of the body, and when engaged, is bent outward. The structure is such that the upper edge of the wing opens out and the locking part on the upper edge comes into contact with the panel, so it will not come off after installation, and the engagement wing piece has a hinge part along the longitudinal direction of the fuselage. Since they are connected in series, they can be firmly attached without problems such as buckling. Furthermore, the engaging wing pieces are designed to be retracted into the retraction space when the connecting body is inserted into the hole in the panel, so the connecting body can be attached securely. There is an advantage that the outer diameter of the part can be brought close to the diameter of the hole, and the engagement wing can be reliably engaged with the edge of the hole by a small amount of protrusion.

In the above embodiment, the explanation was based on a method in which the male member 1 and the female member 2 are attached to the panels A and B, respectively, and the two members are joined together as the panels are brought into contact with each other. are connected in advance, and after attaching it to the mounting hole a of one panel using the head of the male member, point it toward the mounting hole b of the other panel, which is made in correspondence with this mounting hole a. It goes without saying that the combined female member 2 may be fitted by being pushed in, and it goes without saying that the present invention is also effective when combining individual male and female members.

[Brief explanation of the drawing]

The drawings show one embodiment of the fastener of the present invention. Figure 1 is a central vertical sectional view showing the state in which two panels are fastened in contact, and Figure 2 is a front view before they are joined. , FIG. 3 is a side view of the female member, FIG. 4 is a bottom view, and FIG. 5 is a sectional view taken along the line of FIG. 2. 1...male member, 2...female member, 3...head, 4
...Engagement shaft part, 6...Engagement body part, 8...Engagement enlarged part, 9...Engagement receiving part.

Claims (1)

[Claims for Utility Model Registration] It has a male member 1 attached to one panel A and a female member 2 attached to the other panel B, and the male member has a head 3 attached to the mounting hole a of panel A. , the female member 2 is provided with an engagement shaft portion 4 that is vertically installed from the lower surface of the head, and a mounting flange 5 that regulates the amount of insertion into the mounting hole b of the panel, and a mounting flange 5 that extends below the mounting flange. A fastener comprising a hollow connecting body 6 and a locking means 7 for a mounting hole, and is configured to fasten panels together in contact with each other by fitting and connecting both members. The male member 1 is provided with an engagement bulge 8 having a substantially conical shape at the tip of the engagement shaft 4, and the engagement bulge 8 is provided on the inner wall surface of the coupling body 6 of the female member in the middle of the depth. The locking means 7 provided on the outer peripheral surface of the joint body 6 of the female member is a thin hinge provided along the length direction on the outer peripheral surface of the joint body 6. A door-shaped engagement wing whose free end protrudes in the circumferential direction with the part 10 as a base point is used, and its upper edge is used as an engagement part 11 facing the mounting flange 5, and a part of the outer peripheral surface of the joint body part 6 is 2, characterized in that a retraction space 13 for the engaging wing piece is provided by cutting.
A fastener for attaching two panels together.